CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Jun. 29, 2013	Jun. 30, 2012
Net sales	$ 46,172	$ 58,969
Cost of sales	26,786	35,316
Gross profit	19,386	23,653
Operating expenses:
Selling, service and administration	14,547	15,663
Research, development and engineering	8,425	9,534
Business Combination, Bargain Purchase, Gain Recognized, Amount	(464)	0
Net operating expenses	22,508	25,197
Operating (loss) income	(3,122)	(1,544)
Non-operating (expense) income:
Interest and other (expense) income, net	(60)	(150)
Income (loss) before income taxes	(3,182)	(1,694)
Provision for (benefit from) income taxes	101	(750)
Net (loss) income	$ (3,283)	$ (944)
Net (loss) income per share - basic	$ (0.11)	$ (0.03)
Net (loss) income per share - diluted	$ (0.11)	$ (0.03)
Weighted average number of shares - basic	29,745	29,116
Weighted average number of shares - diluted	29,745	29,116
Cash dividends paid per common share	$ 0.08	$ 0.08